Side-leg construction for matchers and the like



L. T. MEDHOLDT.

SIDE LEG CONSTRUCTION FOR MATCHERSAND THE LIKE.

APPLICATION FILED MAR. 17, 192i.

1,406,470. Patented Feb. 14, 1922.

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APPLICATION FILED MAR. 17, I921.

Patented Feb. 14, 1922.

2 SHEETS-SHEET 2- 17117267 Louis Tfleahozdi 15;; 8.

UNITED STATES PATENT OFFICE.

LOUIS T. MEDI-IOLDT, OE WINTHROR'MASSACHUSETTS, ASSIGNOR T0 S. A. WOODS MACHINE COMPANY, or BOSTON, onusn'r'rs.

MASSACHUSETTS, A CORPORATION'OF MASSA- SIDE-LEG CONSTRUCTION FOR MATCHERS AND THE LIKE.

Specification of Letters Patent.

Application filed. March 17, 1921. Serial No. 453,189.

T 0 all whom it may concern Be it known that I, LOUIS T. Mnnnonnr, a citizen of the United States, and a resident of \Vinthrop, in the county of Suffolk and State of Massachusetts, have invented an Improvement in Side-Leg Construction for Matchers and the like, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts.

This invention relates to wood working machines and the like having rotary cutter heads and the particular application herein shown is to the side leg of a matcher or pro filer, that is, the cutter mechanism which is mounted on a more or less upright axis to operate on the edge of a board passing through the machine. The invention relates to an improved arrangement for adjusting and positioning the cutter.

My invention will be best understood by reference to the following description of an illustrative embodiment thereof shown by way of example in the accompanying drawings, wherein:

Fig. 1 is a side view of a portion of a matcher adjacent the side heads with parts in section; and I Fig. 2 is a section on the line 2-2 of Fig. 1 with one of the side legs in a different position of adjustment.

' Referring to the drawings I have there shown a machine having two staggered side legs 3 and 5 operating on opposite sides of the board passing through the machine and for an understanding of my invention it is sufficient as herein to show the means for positioning and adjusting one of the side legs 5 which in the example shown comprises a rotary cutter head 7 directly driven by an electric motor 9.

In accordance with my invention means are provided for moving the side leg in and out transversely of the machine and also for tilting or swinging the same andconveniently a single operating element is provided for effecting both movements. For this purpose the motor casing 9 may be mounted on a carrier plate 11 on which it may if desired be. vertically adjusted by mechanism 18 of well known type, as shown in Fig. 1. The carrier 11 may be mounted, conveniently in the manner hereinafter described, on a carriage 15 adapted to slide,

transversely of the machine on guideway 17. Movement of the carriage on the guideway will effect an in and out adjustment'of the side leg. To permit swinging adjustment of the side leg it is mounted pivotally on the carriage 15 and in the embodiment of my invention here shown this mounting is such that the side leg will swing about a point 19 on the work supporting bed corresponding 7 to the inner edge of the cutter head as a center, as shown in Fig. 2, the construction by which this is effected being a subsidiary invention not original with me but in part based on that herein claimed. Referring more particularly to Fig. 1, the carrier 11 is herein mounted on the carriage 15 by means of a depending hook shaped rib 21 on the former, as best shown in Fig. 1, engaging with an are shaped ledge 23 on thelcarriage 15, the are 28 being centered substantially at the point 19. The side leg of the carrier 11 is thus permitted a swinging movement about 19 as a center as 21 is moved along 23.

Suitable means are provided whereby the side leg may be held against either swinging movement or in and out translative move-' ment. Referringto Fig. 1, I will first de.

scribe the means whereby the carrier plate rotative movement. I have herein shown a screw 25 tapped into plate 11 loosely receiving a chock block 27 presented adjacent an edge of the carriage 15, set screws 29 being provided for positioning the block. Mounted on the screw 25 is a cam provided with'a hand lever 33 whereby screw and cam can berotated in such manner as to press the chock 27 inwardly from the position shown in Fig. 1 against the margin of the carriage 15 whereby to clamp the carrierll and con sequently the side leg thereto so thatthe side leg will move with-the carriage as unit and notbe capable of rotative movement relatively thereto. For locking the carriage 15 to the guide 1? to precludetrans lative movement of the side head I may pro wide a lorking rod (best shown in Fig. 2) having a squared end extending from the side of the machine bywhioh it. may be turned, this locking rod being received between the lower margin of the guideway 17- 15, the rod being held in position by clip 39 as illustrated. The rod has one side flattened or slabbed off as best illustrated in Fig. 1 and cooperating therewith is an adjusting screw 4C1 tapped through the bracket 37. l Vhen the flattened surface of the rod interposed between the guideway 17 and the endof set screw 11 there is freedom of movement between the carriage 15 and the guide way. When, however, the rod is turned to bring the full diameter thereof between the parts it serves to jam the two together so that the carriage is locked on the guideway and must move vas one therewith.

A single adjusting mechanism is provided which will serve either to move the side leg in and out or to swing it accordingly as whether one or the other of the cooperative clamping mechanisms is in use. For this purpose a suitable traversing means such as an adjustingscrew is connected to the side leg itself at a point remote from the pivot. It will be clearly understood that if the side leg is held against translative movement but is free to swing, movement of the adjusting device will cause it to swing about its pivot. On the other hand, if such pivotal movement is prevented the same force will tend to move the leg bodily. The adjusting device in the present instance takes the form of a screw 13 journalled in the frame of the machine and having an operating portion, such as the squared end shown, projecting at the side thereof. Cooperating with the screw is a nut45 which, as will be understood, must be rotatively mounted relative to the side leg to permit swinging movement of the latter. In the form of the invention here shown the nut is mounted to slide in an undercut guide 47 in the carriage 15 and has projecting therefrom a pin 49 extending from the face of the carriage and entering a slot 51 in the carrier plate 11, the slot 51, as best shown in Fig. 2, extending transversely of the guideway 47 in carriage 15 which receives the nut. If the clamping bar 35 is in position to lock the carriage 15 on the guide 17 and the clamp ing chock 27 is released, permitting the car rier 11 to swing on the carriage 15 about the arcuate support 23 and the adjusting screw 43 is then turned, the nut 45 will be moved in its guides 47, say toward the reader view ing Fig. 1, and the pin 19, actingon the walls of the slot 51, will swing the side'leg to the position shown in Fig. 2." On the other hand, when the parts are in the positions shown in Fig. 1, the clamp 35 is released and the clamp 27 is thrown in, locking the plate 11 to the carrier 15. The nut 4:5 will be prevented from moving" on the guideway 17 since it will be locked by the engagement of the pin 49 in slot 51 as will be clearly understood from Fig. 2. Therefore, rotation of the screw 43 willmove the nut bodily and with it the carriage 15-which will be moved in and out on the guideway 17.

The embodiment of my invention illustrated in the drawing is a construction devised by Percy H. Young of Dorchester, lv fassacl'iusetts,andcertain features of construction shown, representing improvements and refinements of my invention as disclosed by me to him, are not claimed herein as they originated with him. 1

Having thus described in detail the embodiment of my invention shown by way of example in the accompanying drawings, the principles exemplified thereby which I claim as new and desire to secure by Letters'Patent I shall express in the following claims.

Claims: i

1. A matcher or like machine having a bed over which work is advanced and a side leg comprising a rotary spindle carrying a revolving cutter head to act on work passing over said bed, amounting for the spindle providing for translative and swinging movements thereof, means at will to clamp it against one such movement while permit ting the other and a traversing means connected to the leg remote from the center of such swinging movement and providing for either translative-or angular adjustmentof the side leg. v

2. A matcher or like machine having a bed over which work is advanced and a sideleg comprising a rotary spindle carrying a revolving cutter head to act on work passing over said bed, a single adjusting device therefor and cooperating means to-render movement of-said device alternatively effective either to traverse the leg or to swing the same to a desired working position.

3. A matcher or like machine having-'21 bed over which work is advanced, a guideway transverse to said bed, a carriage slidable thereon, a support pivotedon the carriage and sustaining a rotary spindle adapted to carry a rotating cutter head for operation on work passing over the bed, releasable means at will to clamp together carriage and guideway, releasable means at will to clamp together carriage and support and an adjusting screw having a nut rotatably associated with the support at a point remote from the pivotal center thereof and providing means for effecting either sliding movementof the carriage or swinging move ment of the support.

In testimony whereof, I have signed my name to this specification.

-tours T. MEDHOLDT. 

